KPat ran an experiment to test optimum power and time settings for microwave popcorn. His goal was to deliver popcorn with fewer than 10% of the kernels left unpopped, on average. He determinedthat power 9 at 4 minutes was the best combination. To be sure that the method was successful, he popped 8 more bags of popcorn (selected at random) at this setting. All were of high quality, withthe percentages of unpopped kernels shown below.12.3, 10.8, 11.7, 11.1, 9.6, 7.2, 3.4, 2.7Does this provide evidence that he met his goal of an average of fewer than 10% unpopped kernels? Use 0.05 as the P-value cutoff level.Choose the correct null and alternative hypotheses.OA. Ho: > 10HA: H=10OC. Ho: H=10HA: H > 10OE. Ho: <10HA: H=10Calculate the test statistic.t= -1.052(Round to three decimal places as needed.)Calculate the P-value.P-value=(Round to four decimal places as needed.)QB. Ho: *10HA: H=10D. Ho: H=10HA: H<10OF. Ho: H=10HA: H10

Given α=0.05 Sample size, n=8 The data is as follows: 12.3, 10.8, 11.7, 11.1, 9.6, 7.2, 3.4, 2.7

Answered: Pat ran an experiment to test optimum…

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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Yvon Hopps ran an experiment to determine optimum power and time settings for microwave popcorn. His goal was to find a combination of power and time that would deliver high-quality popcorn with less than 10% of the kernels left unpopped, on average. After experimenting with several bags, he determined that power 9 at 4 minutes was the best combination. To be sure that the method was successful, he popped 8 more bags of popcorn (selected at random) at this setting. The data below report the percentages of uncooked popcorn. 2.9 2.8 5.2 6.7 7.0 7.8 10.8 13.2 (a) Using a computer or calculator, calculate the sample mean and the sample standard deviation s. Clearly indicate which quantity is which using the correct symbols and round your answers to two decimal places, if necessary. (b) What percent of unpopped kernels is 3 standard deviations above the mean?
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